<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            padding: 0px;
            margin: 0px;
            list-style-type: none;
        }
        .a{
            height: 80px;
            position: relative;
        }
        ul{
            width: 450px;
            height: 50px;
        }
        li{
            float: left;
            margin: 20px 10px 10px 10px;
        }
        .a_1{
            float: right;
            position: absolute;
            right: 50px;
            top: 20px;
        }
        .btn{
            background: #4e6ef2;
            border-radius:20%;
            font-size: 15px;
            color: #fff;
            border: none;                
        }
        .b{
            width: 1280px;
            height: 600px;
            margin: auto;
        }
        .b_1{
            width: 654px;
            height: 600px;
            margin: auto;
        }
        img{
            margin:0px 0px 0px 150px
        }
        .text{
            width: 540px;
            height: 38px;
            float: left;
            
            border: 3px solid #c4c7ce; 
            border-radius: 10px 0px 0px 10px;
        }
        .btn1{
            height: 44px;
            width: 100px;
            border: none;
            border-radius: 0px 10px 10px 0px;
            background: #4e6ef2;
            color: white;
            font-size: 15px;
        }
    </style>
</head>
<body>
    <div class="a">
        <ul>
            <li>新闻</li>
            <li>hao123</li>
            <li>地图</li>
            <li>直播</li>
            <li>视频</li>
            <li>贴吧</li>
            <li>学术</li>
            <li>更多</li>
        </ul>
        <div class="a_1">
        <span>设置</span>
        <input type="button" value="登录" class="btn"></div>
    </div>
    <div class="b">
        <div class="b_1"><img src="images/baidu.png" alt="" width="350px">
        <div class="b_2"><input type="text" class="text"><input type="button" value="百度一下" class="btn1"></div>
        </div>
    </div>
</body>
</html>